It's really not that easy. That would require a police officer voluntarily picking up an OT shift, which in other words, means that the owner of the lot is responsible for paying his hourly wage ($25+/hr once they get into OT). The local authorities aren't stupid. They know what's happening at these late night gatherings.

Your best bet is to have a smaller group (maybe 10 - 20) meet at a certain restaurant at the same time, on the same day, every week. Go inside, eat, and then come outside and don't act obnoxious and management more than likely won't mind you hanging out for a little while. That's how we used to do it when I was in Tri-Cities Mustang Club and that's also how RPM does it.